Apparatus for forming hollow glass articles.



N0.' 828,318. r r PATENTED AUG. 14, 1 906.

J. 0. JOHNSON.

V APPARATUS FOR FORMING HOLLOW GLASS ARTICLES.

APPLICATION FILED JULY 13.1905.

'5 SHEETS-SHEET 1.

wn'massss mvzm'on N0. szasish PATENTED AUG. 14, 1906.

J.0.JOHNSON.-

APPARATUS FOR FORMING HOLLOW'GLASS ARTICLES.

APPLIOATION FILED JULY 13.1905.-

5 SHEETS-SHEET 2.

1 III WITNESSES PATENTED AUG. 14 1906 J. O. JOHNSON.

APPARATUS FOR FORMING HOLLOW GLASS ARTICLES.

APPLIOATION FILED JULY 13. 1905.

5 SHEETSSHEET 3.

INVENTOR I UF@ 9 g No. 828,818. PATENTED AUG. 14, 1906.

- J.O.JOHNSON.

APPARATUS .FOR FORMING HOLLOW GLASS ARTICLES,

APPLICATION FILED JULY 13. 1905.

I I 5 SHEETS-SHEET;-

WITH ESSES N 0 S N H 0 .J 0 .J

APPARATUS FOR FORMING HOLLOW GLASS ARTICLES APPLIGATION FILED JULY13.1905. v

5 SHEETSSHEET 5.

WITN ESSES Pittsburg, Allegheny county, Pennsylvania,

UNITED STATES PATEN GFFICE.

JESSE o; JoHNsoN; or Enslaved-PENN YLVANIA, ASSIGNOR or ONE?HALF'TO'HENRY c. FRY, or ROCHESTER, PENNSYLVANIA.

' Specification of Letters Patent.

, Patented .Aug. 14,1996.

Applicationfiled uly 13, 1905. Serial No. 269,479.

To all azhom it may concern: 1 i

Be it known that I, JEssE O. JOHNSON, of

have invented a new and usefulApparatus for Forming Hollow GlassArticles, which the followingis a full, clear, and exact descriptlon,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 is a sectional front elevation of myimproved apparatus. Fig. 2 is a partial side elevation showing part ofthe valve mechanism and the table-lock. Fig. 3 is a artial section atthe pressing-station on line II III of Fig. 7. Fig. 4 is a sectionalview at the blowing-station. Fig. 5 is a detail elevation showing thestep ofejecting. Fig. 6 isa detail view of the blow-head valve. Figs. 7and- 8 are sectional plan views on the lines VII VII and VIII VIII,respectively, of Fig. '1. Fig. 9 is a partial cross-section'showing theframe-bracing, and Fig. 10 is a plan view of the cam base-plate.

My invention relates to the forming of hollow glass articles which areopen at one end and is designed to-providea new and improved apparatustherefor.

In carrying out my invention in its referred form the tumbler or otherhollow g ass article is pressed at a pressing-station. It is then movedout of the mold and reheated and fire-polished, preferably by moving itinto afurnace. It 18 then moved back into the mol'dand expanded therein,preferably by air pressure, toreshape it to the desired form, and it isthen ejected as a finished tumbler. In-connection with the pressing 'ofthe hollow article I employ a peculiar improvedspring arrangement,whereby a finer edge may be given to the tumbler than heretofore. wheremachine methods have been employed, and

applied.

to obtain the result of hand methods where the operator can regulate thepressure accord- ,ing to the amount of glass in the mold. I thus avoidthe crushing of the edge at the open end, which often results with theuse of machine by reason of excess pressure being n the drawings, 2representsa stationary base-plate which is preferably of generalcircular form, a part of its edge portion being cut away, asshown inFig. 10,.so that this plate acts as a cam against-rollers on the molds,as hereinafter described. This plate is are carried on the truck-frame 4of a wheeled truck. The machine may of course bestationary, but ispreferably. carried on a truck, as shown, so that it may be moved fromplace to place. A circular rotary plate 5 rests on the baselate 2,being, preferably carried on ball-bear gs, (shown at 6.)Thisrotaryplate' carries the main ortion of the apparatus, including themol s', and is'provided with five holes equidistant from its axis, eachof which holes may be'brought into registry with the hole inthebase-plate which is shown at 7 in Fig. 10, which is at thepressing-station. Ad'

jacentto each hole in the rotary plate is a post or standard, the lowerend of which is secured in the rotary plate 5, while its upper end issecured in the upper spider 9. The lower end portion in each standard isrecessed preferably carried on the side legs 3, which to form a bearingfor the collar 10 of the arm 11, which carries the mold-cage. There arefive of these arms 11, each having a ring 12 'at its outer end intowhich seats the moldcage 13. Each ring 12 is provided with a handle 14,by which the mold may be swung into and out of operative position,"andwithin the cage 13 isfa stem 15, havin an enlarged lower portion 16,which fits neat y within the cage, while its upper part 17 forms themold-bot- 'tom or-mold-valves The mold 18 is arranged to, seat and fitwithinthe up er enlarged por tion I9 of the cage, the mold thus bemgcentered thereon. Each ring or mold carrier12 is provided with :1depending pin 20, carry- I ing a friction-roller 21', which is arrangedto engage the cam edge of the stationary plate 2 after the pressingoperation has taken place and the mold begins its movement to thereheating-station during the revolution of the table 5. To hold thefriction-roller against the'cam, each arm -11 is provided'with a latch22, having a hooked end arranged'to engage a projection 23 on themovable table. 'When is fully depressed the latch is drawn out ofengagement with the table, thus allowing the table to be turned to bringthe blanks to the next successive stations. This ,turning is preferablydone by hand, though it may be one automatically, if desired.

Itwill be seen that while the pressing operation is being carried out atstation A another-blankis being fire-polished at station B, a thirdblank is being expanded and reshaped at station C, anda fourth articleis beingejected, and after the ressin operaation the operator pressesown t e foot-1 treadle for a part of its distance, thus lowering thearticle into the mold at the reheating station, lifting. the blow-headat the blowingstation and retracting the mold-bottom at theejecting-station. As the operator de-. presses the foot-treadle part way'healso moves the hand-lever to exhaust the air from the cylinder at thepressing-station, allowing the mold to return to place. He then pushesthe foot-lever down lts full extent to withdraw the locking-latch andturns the table a part of a revolution to bring the blanks to the nextsuccessive stations.

The yielding resistance or back-pressure device, which 0 poses theaction of the motive fluid, is additional to and independent of theusual springs-for the spring-plate. These springs cannot beiiised forthe purpose of my '3 invention, for the reason that if. such springs Icould be adjusted properly for that purpose they wouldnot performroperly their own 35.

function viz 'to hold t e spring-plate in propler position. I T

e advantages of my invention will beapparent to those skilled in theart. The

.back-pressin device overcomes the difiiculty ofcrushin t e edge of thearticle where the "glass is slig tly in excess of the exact amount.irequired. In other words this pressing ap- 3 mg amounts of 4S paratusautomatically compensates forvarylass. -T e reheating and fire-polishingof t e blank'does away with the hand 0 erations heretofore necessarywith. resseciifarticles, While the expanding .0 re ion""c'orrectsanyslight deforming oi departing from my invention.

t a article and resha es it to final form. The use of' skilled woren inreshaping the a ressed article after the reheating is thus one awaywith. A large output offinelyfinished articles may thus be obtained atlowerlabor cost. The pressin device may be used with or without theremamder of the apparatus and is capable of general application.

- f The reheating andreshaping may be employed with ordinary pressingapparatus, and

"many other changes may be made in theform and arrangement of-theapparatus without laim- "1; In glass-pressing apparatus having apressing-plunger and a spring-plate, a motive fiuid cylinder foractuating the press,

and a yielding resistance independent of the spring-plate, and arrangedto act against the motive fluid during and at the com leti'on of thepressing operation; substantia lyas descr bed.

2. glass-pressing apparatus having a pressing plunger and aspring-plate, a motiVG-flllld cylinder, a yielding resistance9independent of the spring-platf- 3nd arranged tr; ui uringthe finaactagainst the motive portion of the pressingstroke, and means foradjusting the point in the'stroke at which the yielding resistance asdescribed.

' 3. In glass-pressing apparatus having a is applied substantially mssing-plunger and a spring-plate, the coInination with a motive-fluidcylinder for ap plying pressure, of sprin s arran ed to resist theaction ofthe motive Enid, said springs being independent of thespring-plate springs, means for bringing said spring into action duringthe-time the pressin operation is beingcompleted and. means or adjustingthe rought into action; substantial y as .de; scribed.-

4. In glass-pressing apparatus having a p'oint in the stroke at whichthe s rings are er, a spring having a fixed bearing, and 5.1"

an abutment 0.11 the stem arranged to eflect a compression of the saidspring after the."

moving member has moved a portion otlits stroke; substantially asdescribed. c 6.- In'glasspressing ap aratus, a ressingstatioman'oenpress-mo d, means or pressing an artic e-in'said'mold at theressingstation, a reheating-station, means or transferrin the pressedarticle in its formingmold tion, and means for moving the article out ofthe mold, reheating it and returning it to the same mold; substantiallyas described.

om the pressing to the reheating sta- 7. In glass-pressing apparatus, anopen press-mold having a movable bottom, a heatingdevice, and mechanismfor moving the bottom to brin the article into heating po sition, saidmec anism being arranged to relace, the blank within the mold after there-. heating and means for transferring the mold to a reshaping-station;substantially as ,de

sc'ribedf 8. Ingilass-gfessing ap aratus, mechanism for mowin t e pressearticle out of the mold, means for reheating the same, and

rmechanism for reshaping the article after retion, 'means for re lacingthe article in the heating and means for moving the mold fromthereheating to the reshaping'station; substantially as described. I 9. Inglass-pressing apparatus,-a movable mold-bottom, means for moving thebottom to lift the article but of the mold, means for heating thearticle While in the lifted posi-v m'old, and aJalowead arranged toexpand .the article in the mold. and means for'c'arrying the mold fromthe heatin to the reshaping station substantially as escribed.

10. Glass-forming apparatus. having a ressing-station', areheating-station, means i or transferringthe pressedblank initsforming-mold to the reheating-station and for removing said blank,reheating it, andreturning it to the same mold, a reshapinggstation, andmeans for transferring the blan and its mold to the reshapin stati0n andthen re- Iii-testimony whereof I have hereunto set' 7 my hand.

p v JESSE O. JOHNSON. Witnesses:

JQHNM LLER. H. M. CORWIN.

